CVE-2026-58159

Apache Traffic Server: Listener and ACL handling allow access-control bypass

State: Published
Severity: 7.0 High
Published: Jul 29, 2026
Updated: Oct 1, 2026
Reserved: Jun 29, 2026

Description

Apache Traffic Server can bypass IP access controls on UDS listeners and through ACL matching errors.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.

Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Scores

CVSS	Score	Vector	Source
4.0	7.0 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N	apache
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L	apache

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
Apache Traffic ServerApache Software Foundation	8.0.0 through 8.1.11Affected 9.0.0 through 9.2.14Affected 10.0.0 through 10.1.3Affected

References

https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6dvendor-advisory

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